TCDD
From Infogalactic: the planetary knowledge core
TCDD may refer to any of the following:
- Turkish State Railways (Türkiye Cumhuriyeti Devlet Demiryolları)
- 2,3,7,8-Tetrachlorodibenzodioxin — a type of dioxin.
- Texas Council for Developmental Disabilities
<templatestyles src="Dmbox/styles.css" />